Envelop.



L. C. VAN RIPER.

ENVELOP.

.APPLIGATIOI FILED MAR. 14,1910. 4 958,785. Patented may 24,1910.

UNITED sTATEs PATENT oEEioE.

LLEWIS C. VAN RIPER, OF CHICAGQ'ILLIN 01S, ASSIGNCR TO BRIGHTMANUFACTURING ENVELOP.

Speccation of Letters Patent.

Patented May 24, 1910.

Application filed March 14, 1910. Serial No. 549,142.

To all whom it may concern:

Be it known that I, LEWIS C. VAN RIPER,

.a citizen of the United States, residing at Chicago, county of Cook,and State of Illinois, have invented certain new and useful Improvementsin Envelops, of which I do declare the following to be a full, clear,and eXact description, reference being had to the accompanying drawing,forming part of this speciiication.

The invention has relation, particularly, to that class of envelopsintended for the transmission through the mails of printed matter, suchas catalogues, circulars or the like, the construction of the envelopbeing such as to securely retain the inclosed matter while permit-tingit to be readily opened for the purpose of inspection; and the inventionis designed, more especially, as an improvement upon the construction ofenvelop set forth in Letters Patent No. 941,392, granted to me November30, 1909.

Figure l is a plan view of my envelop in unfolded position. Fig. 2 is aView similar t-o Fig. l, but with the supplemental portions of the sideflaps folded. Fig. 3 is a view showing the envelop partially completed.Fig. 4 is a view showing the envelop complete. Fig. 5 is a view in crosssection on line 5-5 of Fig. 4.

The general construct-ion of the envelop blank embraced by my presentinvention is the same as that set forth in my hereinbefore mentionedLetters Patent No. 941,392. That is to say, the envelop comprises afront portion l, side iiaps 2 and 3 which, when folded and sealed,constitute the back portion of the envelop, an end flap 4 thatcorresponds with the usual sealing flap of the envelop and an unsealedinspection flap 5.

The precise dimension and shape of the body and flaps of the envelop maybe varied as desired.

Across the interior of the body of the envelop extends the supplementalstrip 6 which, as in my aforesaid Patent No. 941,392, will coperate withthe flaps 2 and 43 in forming a pocket` to receive the unsealed end flap5 of the envelop. In the envelop set forth in my Patent No. 941,392, thesupplemental strip extended merely between the lines 7 and 8 whereon theflaps 2 and 3 were folded, but in my present invention the end portions6a and 6b of the supplemental strip 6 extend across the lines 7 and 8and overlap the flaps 2 and 3, as shown. The flaps 2 and 3 are providedrespectively at their` ends with supplemental flaps 2EL and 3u, thepurpose of which will presently appear.

In forming my improved envelop, the blank will be cut with the severalflaps 2, 2, 3, 3, 4 and and gum will be applied along the edges of theliaps 2, 2, 3, 3 and 4 and gum will also be applied transversely fromside to side of the iiaps 2 and 3, as shown at 2'2 and 3C. Thesupplemental strip 6 will be placed in position with its endsoverlapping the flaps 2 and 3 and the upper corners of the strip 6 willbe united by the gummed portions 2c and 3c to said liaps, as clearlyshown in Fig. l of the drawing. By this means the supplemental strip 6will be securely held in position while the folding of the envelop isbeing effected, and inasmuch as the supplemental strip 6 is thus held atboth ends, all danger' of the displacement of the strip after it hasbeen set in position, will be avoided. rlihe supplemental flaps 2a and3a will be turned over on to the flaps 2 and 3, and the inner ends ofthese supplemental flaps 2a and 3a will be united to the ends 6a and 6bof the supplemental strip 6, as clearly shown in Fig. 2 of the drawing.

By forming the supplemental strip 6 with the end extensions 62l and 6"overlapping the side flaps 2 and 3, two distinct advantages areattained, viz., first, the supplemental strip 6 is securely gumnied atboth ends to the flaps 2 and 3, so that during the subsequent formingoperations the strip will be prevented from shifting out of place and,second, the end portions 6a and 6b of the supplemental strip 6 willeiiectively strengthen both ends of the envelop at the points which aresubjected to the greatest strain in the operation of opening and closingthe envelop when its contents are to be inspected. After the strip 6 hasbeen set in position and the supplemental flaps 2EL and 3d have beenfolded down, as shown in Fig. 2 of the drawing, the unsealed flap 5 willthen be turned over on to the supplemental strip 6, as shown in Fig. 3,and the flap 2 will be folded over the body portion l and over thesupplemental strip 6 and flap 5, and the layer of gum 2c will firmlyunite the flap 2 to the supplemental strip 6, adjacent the innermostedge of said strip. The flap 3 will then be turned over upon the body l,the supplemental strip 6, and the flap 5, and the outer gummed edge ofthe flap 3 Will overlap and be sealed to the edge of the flap 2, Whilethe gummed surface 3C of the ap 3 Will be securely united to thesupplemental strip 6 adjacent its innermost edge.

It Will thus be seen that the unsealed flap 5 Will be held Within apocket formed by the supplemental strip 6 and the flaps 2 and 3, butafter the printed matter or the like has been placed Within thecompleted envelop and the usual flap 4L has been sealed, the unsealedflap 5 can be readily Withdrawn and replaced when the contents of theenvelop are to be inspected. Inasmuch as both ends of the pocket thatreceives the unsealed Hap 5 are reinforced by the extensions 6a and 6"of the supplemental strip 6, the danger of tearing out the ends of thepockets is reduced to a minimum. So, also, the lapping of thesupplemental flaps 2a and 3a on to the ends 6 and Gb of the strip 6serves to materially strengthen such end portions of the strip.

Inasmuch as the gummed surfaces 2C and 3C of the Haps 2 and 3 extendfrom side to side thereof and are in line with the upper portion of thesupplemental strip 6, all the gumming of the blank may be done at one.operation and it is not necessary otherwise to apply gum to the surfaceof the supplemental strip, since the inner portions of the gummedsurfaces 2C and 3 serve to unite the upper corners of the strip 6 to theflaps 2 and 3.

Having thus described my invention, What l claim as ne7 and desire tosecure by Letters Patent, is

l. An envelop comprising` a front portion, a back portion, flaps, and aninterior supplemental strip for forming With the back portion a pocketto receive one of the iaps,

said supplemental ystrip being gunnned to the back portion and.havingboth of its ends extending over and .gummedto the iflaps adjacentthereto.

2. An envelop comprising a front portion, :i a back portion formed ofside flaps, a sealingliap, an inspection flap and an interiorsupplemental strip for forming with the back portion a pocket to receivesaid inspection Hap, said supplemental strip being longer than thevinteriorfdimensi'on of the envelop and overlapping each of said sideflaps, each of said side naps-being provided With a gummed surfaceextending from side to side thereof in line with the upper portion ofsaid supplemental strip, said gummed surfaceserving to unite the uppercorners of said strip to the side flaps While said iaps are inunfoldedvposition and serving,favhen the side flaps are folded, to unitethem to the supplemental strip adjacent its upper edge.

3. An envelop comprising a front portion, a back portion formed of flapscarried by the front portion and a separate supplemental strip, tWo ofsaid flaps and said supplemental strip being secured together-to form apocket in said back portion between said flapsl and said supplementalstrip and open along one edge of the envelop to removably receive aninspection flap, said supplemental strip having extended end portionsoverlapping the iaps `that form the back portionand secured thereto,land said-two flaps having supplemental flaps folded over the endportions of said supplemental strip.

i LEVIS C. VAN HIPER.

Vitnesses GEO. P. FISHER, Jr., OTTILIE C. FREiBERG.

